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3 years ago

If afsheen can read 39 pages in 30 minutes how much tume she need to read 1287 pages

Mathematics

1 answer:

Elodia [21]3 years ago

8 0

Answer:

16 hours and 30 minutes

Step-by-step explanation:

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you deposited $1275.00 in your savings account . your simple interest rate is 3.75% annually. How much will your total account b

Lera25 [3.4K]

Answer:

$1,322.81

Step-by-step explanation:

6 0

3 years ago

Find the error and then find the correct answer.

qaws [65]

Answer:

w = 3

Step-by-step explanation:

The correct one is given below:

- 5 - 4w = - 17

+5 + 5

- 4w = -12

- 4 -4

w = 3

The error is 4w instead of - 4w

8 0

3 years ago

Plz help I will give BRAINLY

Brut [27]

Answer:

I believe it is C

Step-by-step explanation:

Sorry if I got it wrong but hopefully you got it right

6 0

3 years ago

Please consider the following values for the variables X and Y. Treat each row as a pair of scores for the variables X and Y (wi

Studentka2010 [4]

Answer:

The Pearson's coefficient of correlation between the is 0.700.

Step-by-step explanation:

The correlation coefficient is a statistical degree that computes the strength of the linear relationship amid the relative movements of the two variables (i.e. dependent and independent).It ranges from -1 to +1.

The formula to compute correlation between two variables X and Y is:

$r(X, Y)=\frac{Cov(X, Y)}{\sqrt{V(X)\cdot V(Y)}}$

The formula to compute covariance is:

$Cov(X, Y)=n\cdot \sum XY-\sum X \cdot\sum Y$

The formula to compute the variances are:

$V(X)=n\cdot\sum X^{2}-(\sum X)^{2}\\V(Y)=n\cdot\sum Y^{2}-(\sum Y)^{2}$

Consider the table attached below.

Compute the covariance as follows:

$Cov(X, Y)=n\cdot \sum XY-\sum X \cdot\sum Y$

$=(5\times 165)-(30\times 25)\\=75$

Thus, the covariance is 75.

Compute the variance of X and Y as follows:

$V(X)=n\cdot\sum X^{2}-(\sum X)^{2}\\=(5\times 226)-(30)^{2}\\=230\\\\V(Y)=n\cdot\sum Y^{2}-(\sum Y)^{2}\\=(5\times 135)-(25)^{2}\\=50$

Compute the correlation coefficient as follows:

$r(X, Y)=\frac{Cov(X, Y)}{\sqrt{V(X)\cdot V(Y)}}$

$=\frac{75}{\sqrt{230\times 50}}$

$=0.69937\\\approx0.70$

Thus, the Pearson's coefficient of correlation between the is 0.700.

5 0

3 years ago

Can someone please help me with

Levart [38]

6x17=100 so you basically multiply 6x17 which would be 100

7 0

4 years ago